<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Document</title>
	</head>
	<body>
		<script>
			var age = 12
			var height = 180

			var result = age + height
			console.log('result', result)

			console.log('result :>> ', 1 / 0) // infinity

			console.log('result', 'abc' * 1) // NaN

			// 进制的表示
			var num = 100 //十进制
			var num1 = 0x11 //十六进制
			var num2 = 0o11 // 八进制
			var num3 = 0b11
			console.log(num, num1, num2, num3)

			var max = Number.MAX_VALUE
			var min = Number.MIN_VALUE
			console.log(max, min)

			// isNaN() 判断是否为NaN
			console.log(isNaN('abc' / 1))
		</script>
	</body>
</html>
